Concentrated sweet cream fat grinder



Aug. 16, 1949- J- B. ORRELL CONCENTRATED SWEET CREAM FAT GRINDER 3- Sheecs-Sneet 1 Filed April 17, 1946 JFM nfah Jbsi ah ,B. Orrell,

Aug. 16, 1949. J, ORR ELL I CONCENTRATED SWEET CREAM FAT GRINDER 3 Sheets-Sheet 2 Filed April 17, 1946 .Zvwen/oi: Jbsephfi. Orrell,

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Aug. 16, 1949. J. B. ORRELL I CONCENTRATED SWEET CREAM FAT GRINDER 3 Sheets-Sheet 5 Filed Apfil 17, 1946 Ifivenfoz; sag/313. Orrell, fie/ 21 9.

Patented Aug. 16, 1949 I it I conoliu'raarzg ttztron MFAr E I v V I GRINDER,

Joseph B. Orrell, Drexel Hill,

Pat, assignor to Abbotts-Dairies, Inc., Philadelphia, Pa., azcor- 'porationof. Maryland a l Application April '17, 1946,?SriafNo 662,689 f "The object of the invention is to provide im? provements in machines for grinding-exceedingly hard substances, and-particularly in grinding, shavin or otherwise comminuting concentrated. sweet fat or cream when solid and very hard at temperatures of about 20 F. or even lower.

In the manufacture of commercial ice cream, as for instance in the vicinity of Philadelphia, the large amounts of cream required makes it necessary to obtain it from "relatively far distant sources, such for example-as the highly productive dairy areas in Wisconsin and other Midwestern Statesf- However, as whole' 'milkincludes all of 75% water, and such products can be shipped only in well refrigerated cars; "the high freight large proportion of water prohibitive, wherefore the solids must be: separated from the water, frozen and transported al0ne,' the necessary amount of water being added at the ice cream plant in the form of whole 'o'r -'conden'sed'milk, fruit juices, and the like. Separation of the cream from the original milknfay be-efiect'ed by aclaime (Claire-ans) I rates'tha t'obtain make the shipment of such -'a any suitable means." creamorrililk solids To illustrate, heretofore *hardfrozen cream had had to be tempered, that is, softened, forfa period of twenty-four hours, or ithereabouts, :at room temperature, in order to permit it to'be'cut into chunks for'addition'to'the mix, or more "completelythawed forgaddition in at least in semiv,

liquid form. if added in 'chunks, or lumpsg'iprotection must be provided"for*the agitator blades of'th'e mixers, "tojsa'y' nothing "of the extended time required; 'for completely dissolving such lumps and mixing, while if"add'ed"inv liiiuid'for semi-liquid form the taste ofthe "final product is "impaired, due to oxidation offthe creameven under the'most favorable conditions.

Consequently," it has been recognized for some t m a he id a m hQd f f ti ng h 1 36291 cream to the liquid'lnix'wouldheto aaditiiisueli quick-1y thaw-able and'dissolvable sizes as are re- Inresented bycoarse cuttings, shavings and chips, at-or'very-close to the low temperaturementioned, so as to prevent the-slightest degree of oxidation priorto suchaddition. g

Another object, therefore, is to proV-ideanizh proved method of adding frozen, unoxidized cream to'a liquid ice creammix, which consists -in chillingthe cream'immediately upon its sep'a ration from the whey, freezing the cream to a temperature of theorderof 20 F, or thereabouts, andthen chipping *and/or coarsely cutting or shaving the solid cream directly into and dis solving and dispensing it throughout, a liquid ice cream mix, beiore'it has been given 'the slightest opportunity to oxidize; even upon the surfaces of said chips ors'havi'ngs'. v

And a' still furtherobject is-toprovidea-grind ing or shaving machine *for the rapid communica tion and direct discharge of the solidly frozen cream into an'ioecream the-speed of operation being suchas to Wholly preventthe -"ox ida-'-' tio'n -of any part or portion or said irozen crea-m before it enters said -mix.

When these objects" in "mind, the invention comprises further-details ofconstruction and-013 eration, which are hereinafter fullybrought out in the ffol'lowin description when read 0on junction with the accompanying drawings, P-Fig. l dsa side elevation of a device' compris ing one embodiment of the invention. Fig. 2 1s a plan iew of the same. Fig. 3 is a central longitudinal section of, the same, showing *two consecutive solid blocks of concentrated sweet fat or "(orrother substance) being forced through and against *the rotary blades-of the devicey-Fig'. 4fis an end elevation "of the device, shown in cooperationwith the adjacent-portions of a' mix ingtank; Fig.'5is a-verticaltransverse section-of the block holding "cylinder, "the"=rota-ry blades therein "and the discharge chute leading therefrom; and Fig. 6 is a perspective view of the rotaryblades-per se.

"Referring to-the drawings, there is provided-a cylinder 1, closedat-its forward and rear endsfby Walls! and "3, the rear portion of said cylinder being open upwardly for the 'unobstructed in- 'sertion pfha'rd-frozen cylindricalflolocks'gof conj-icentrat'e'd sweet fat or cream, 'while the remain portion offsai'd cylinder 'is closed "by a ourvedtop .4, havingan opening 5 through which-access can ice had whenever desired to the rotaryjblades 6, carriedlby a shaft ,1-,"which"extends throughfthe forward" will Said shaft is *driven *by a suit able motor 8 through a sprocket chain 9 and reduction gearing within the housing Ill, said motor, chain and gearing being of conventional form and design. Adjacent to the upper open portion of said cylinder, a laterally extending shelf la may be provided, if desired, to support a fresh block prior to its entering said cylinder.

At this point it. should be noted that the device may be operatively supported upon any suitable type of stand, but the stand here shown for purposes of illustration consists of a plurality of upright legs I l, preferably provided with roller 12, and connected by a lower series of horizontally vided in order to protect them. In existing tanks extending angles l3 supporting the'motor 8 upon transversely extending channels 14. Additional angles may be provided if desired between the level of said lower series and an upper series l6, which together form the top of the stand upon which rests the cylinder and reduction gearing referred to.

'Ihe blades 6 preferably comprise radially extending, aligned vanes 6a, integrally connected together through an intervening spindle 6?), while the rearward ends of said vanes terminate in oppositely directed cutting edges 60, and the radially outer edges of said vanes either lightly scrape or closely approach the inner curved surfaces of the forward end portion of said cylinder. A discharge opening 11 is provided in a lower lateral portion of the forward part of said cylinder, said opening being of substantially the longitudinal extent of the vanes 6a, so that the latter while rotating at high speed function as blower elements to force comminuted solid fat or cream through said discharge opening and thence through a diagonally downwardly extending chute [8 connected therewith. The upper access opening of said cylinder is normally closed by an arcuate, hinged door l9.

Within said cylinder is a reciprocatory piston head 20, preferably provided with lugs or spurs a and carried by a piston rod 2|, which is actuated in conventional manner by the fluid pressure cylinder 22, into which air under pressure or steam is led by means of pipes 23 and 24, through a valve 25 that is controlled by a manually shifted lever 26, froma source (not shown) connected to said valve through a single pipe 21. In well known manner, shifting said lever 26 from side to side functions to reciprocate the piston head to and fro, so as to thereby alternately force one or more blocks of solid fat or cream against said rotary blades and to withdraw said piston in the reverse direction, so as to permit additional blocks to be placed in said cylinder. It should be understood, however, that whereas manually controlled fluid-actuated means is shown, the forcing of blocks against said blades can be accomplished by a purely manually actuatedpiston head, if preferred, said blocks bein prevented from rotating by engagement with saidlugs or spurs 200" In any case, the piston-actuating means, if projecting substantially beyond the limits of said frame support, may be partially supported by one or more diagonal braces 28, as indicated.

In order to carry out the improved method of adding solid concentrated sweet fat or cream at low temperatures, to a batch of ice cream mix, the device herein described is placed in such position that the chute I8 extends into close promimityv to the filling opening 29 of a mixing tank 30, which is closed at its top 3|, except for said filler opening, which is intended to be closed by a trap door 32. as soon-as the desired quantity these rods may be retained, if desired, but are unnecessary in newly constructed tanks, for the reason that the new device so shaves, chips, or otherwise comminutes the extremely hard sweet fat or cream asto prevent such damage to the blades From the nature, construction and operation ofthef'new device, it will be apparent that not only is improved comminution of hard-solid sweet fats and cream provided for, but that by using the device in close proximity to the mixing tank, substantially as herein described and illustrated, so improves the method of adding the frozen material to the mix, that there is no possibility of its becoming tempered in the slightest degree, althoug h it readily softens, dissolves and is almost instantly intermixed with the contents of the mixing tank; as herein explained. Thus, we haveboth an improved device or machine for comminuting hard-frozen sweet fats or cream, and at the same time a method of so closely con secutively comminuting and adding such material to an; ice: cream mix, that no appreciable interval exists'sufiicient for the temperature of the solids to rise under average room temperaturesfrom, theorder of 20 F. to anywhere near the thawing point before entering and becomingimmersed in the mix within the said mixing tank.

Having thus described my invention, what I claim "and-desired to protect by Letters Patent of theUnited States is:

1-. A;; grinder for concentrated sweet fat or solid cream, comprising a cylinder having 00-' axially apertured'end walls and an opening in its curved wall, a reciprocatory shaft extending through one of said apertures, a piston carried by the-inner end of said shaft, and a combined cutter, scraper and centrifugal fan comprising a. substantially planar rotatable element having substantiallyradially aligned cutting edges and a pair of oppositely directed, rectilinear scraping edges parallel with its axis of rotation, said cutting edges being operative to simultaneously cut a cylindrical block of solid sweet fat or cream as said block is forced byfsaid piston towards said element, said scraping edges being operative to remove accumulation of comminuted material from the inner wall of said cylinder, while said element func'tioningas a fan impels the com-. minuted material through said opening, and means to rotate said element at high speed. H 2. A grinder for concentrated sweet fat or solid cream, comprising a cylinder having a feed openingin its curved 'wall, a closure for said opening hingedly secured to said cylinder and operative tofunction as a temporary support for a solid block of fat or cream, the lifting of the free edge portion of said closure operating topermit such block to ldrop through said feed opening into said cylinder and'thereafter span said opening, a reciprocatory shaft'extending slidably through an aperture'in one end wall of said cylinder, a power-driven shaft journaled through an aperblock is forced by said first-mentioned shaft towards said element, said scraping edges being operative to prevent accumulation of comminuted material upon the inner surface of said curved wall, while said element functioning as a fan impels the comminuted material through a discharge opening in said curved wall spaced from said feed opening.

JOSEPH B. ORRELL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Re. 20,952 Smith Feb. 3, 1931 684,975 Bosman Oct. 22, 1901 892,808 Carr July 7, 1908 915,460 Moore Mar. 16, 1909 1,305,484 Mosca June 3, 1919 1,866,842 Curtis July 12, 1932 1,977,320 McKinney Oct. 16, 1934 2,211,655 I-Iilgers Aug. 13, 1940 2,235,217 Koch Mar. 18, 1941 2,327,140 Speirs Aug. 17, 1943 2,412,208 Brunkhurst Dec. 10, 1946 

